Open Thread: Developing for Full Screen Mode?

Full Screen Mode is a topic that comes up a lot here and abroad -- it's a way to set a given application to operate with as few menus, panels, and other navigational widgets as possible, claiming the entire screen, and enabling the user to focus exclusively on one task without distraction.

Essentially, it temporarily hobbles your maddeningly versatile Mac into a machine for doing exactly one thing, being whatever is appearing in your single Full Screen window. And you might be amazed what a nice thing that can be sometimes. It's great for writers in particular, so it's perhaps not surprising that writing applications seem to be leading the Full Screen charge. Although you can also get FSM in Firefox using extensions and in Safari with the help of Saft.

So my question, for you Mac developers in the house: I'm curious to learn more about Full Screen mode and how hard it is to make it a part of Cocoa applications. I've gotten the impression that Cocoa has "hooks" in place to hide the Menu Bar and claim all the screen space with a given document's front window, so I'm curious whether it's something that's difficult to implement. I'd love to request it in some favorite applications of mine (Hi, again, Allan!). What do you guys say? Piece of cake or pony?

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